Hello everyone, I am simulating a stirred tank in two phases (gas-liquid) using the model euler-euler and model k-e for dispersed phase. my problem is that I want to use a model for the bubble diameter of the gas phase. Here is what model of the bubble diameter: d_b = 1.4*(sigma/rho)^0.6*e^04 sigma = surface tension of the liquid phase; rho = density of the liquid phase; e = Turbulent kinetic energy dissipation rate of the liquid phase